Table 2
Observation log.
| Instrument | Spectral resolution | Date | Phase coverage | Exposure time | Seeing | S/N | Airmass | Nspectra |
|---|---|---|---|---|---|---|---|---|
| CARMENES | 94600 (VIS) | 2022 May 22 | 0.56−0.77 | 200s | 1.5′′ | 17 | 1.2−1.1 | 49 |
| 80400 (NIR) | 2022 May 22 | 0.56−0.77 | 206s | 1.5′′ | 19 | 1.2−1.1 | 49 | |
| 94600 (VIS) | 2022 June 7 | 0.27−0.44 | 200s | 1.4′′ | 21 | 1.2−1.1 | 40 | |
| 80400 (NIR) | 2022 June 7 | 0.27−0.44 | 206s | 1.4′′ | 23 | 1.2−1.1 | 40 | |
| CRIRES+ | 118 900 (a) | 2024 April 8 | 0.58−0.83 | 120s | 0.7′′ | 62 | 1.7−1.3−1.5 | 100 |
| 143 000 (a) | 2024 April 9 | 0.06−0.24 | 120s | 0.4′′ | 73 | 1.7−1.3 | 76 | |
| 100000 (b) | 2024 May 26 | 0.76−1.00 | 120s | 1.5′′ | 38 | 1.7−1.3−1.4 | 102 | |
Notes. (a)The spectral resolution values for CRIRES+ were derived from the width of the PSF; for the fiber-fed CARMENES spectrograph, the spectral resolution corresponds to the nominal instrument values. (b)The extended PSF homogeneously illuminated the slit, resulting in the instrument’s nominal spectral resolution; the AO system failed for a total of 59 spectra, and due to poor data quality, the dataset was excluded from the analyses presented in this paper.
Current usage metrics show cumulative count of Article Views (full-text article views including HTML views, PDF and ePub downloads, according to the available data) and Abstracts Views on Vision4Press platform.
Data correspond to usage on the plateform after 2015. The current usage metrics is available 48-96 hours after online publication and is updated daily on week days.
Initial download of the metrics may take a while.